<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>arr</title>
	<script type="text/javascript">
	var str = "北京";
	var str1 = "东莞";

	var arr = [['河北','山东',['济南','青岛']],'东莞','广州'];
	arr[100]='珠海';

	// alert(arr[0][2][0]);
	// var arr = [];
	// arr[0]="北京";
	// arr[1]="东莞";

	// var arr = new Array();
	// arr[0]="北京";
	// arr[1]="东莞";

	// 数组的下标 0

	// for (var i = 0; i < 3; i++) {
	// 	document.write(arr[i]);
	// };

	// for (var i in arr) {
	// 	document.write(arr[i]);
	// };

	function maxnum (arr) {
		sdfsdf 

		return
	}

	arr =  [1,56,23,6,156,87,3,5,55];

	var max = maxnum(arr);

	alert(max);


	</script>
</head>
<body>
	
</body>
</html>